What it does
When you press the place-bet button, the extension reads the slip and watches for the book's confirmation. A notification then asks Save or Discard, so you don't need to open anything. Pending bets are settled later from the book's own bet history, including half-won / half-lost Asian lines and exchange profit/loss.
How to use it
- Bet as usual. The extension recognises the place-bet control on any book, with no per-site setup.
- Save or discard the bet from the notification.
- Use Capture → Import from My Bets to settle pending bets.
- Export to CSV, or send the bets to the Betting Tracker with one click to confirm.
Supported markets
Sportsbooks with decimal, American and fractional odds, singles, parlays, live bets and cash-out. Exchanges (Betfair, Smarkets, Matchbook, Betdaq) with back / lay, liability and per-exchange commission. Prediction markets (Polymarket, Kalshi, PredictIt) with Yes / No shares and fees.
Privacy
It only reads pages. It never clicks, types or submits anything, and it has no server. Your bets and settings stay in your browser, and the browser itself blocks the extension from opening any network connection.
Browser support
Chrome, Edge, Brave and Opera, loaded as an unpacked extension from the GitHub repo. Firefox can load it as a temporary add-on, but hasn't been tested yet. Interface in 13 languages.